LOLIN C3 Mini image

LOLIN C3 Mini

Development Board

Code name: LOLIN_C3_MINI

LOLIN C3 Mini is a development board based on the ESP32C3 microcontroller using RISCV32 architecture.

This board features a maximum CPU frequency of 160 MHz and 4MB flash memory.

About LOLIN C3 Mini

Tiny ESP32-C3 board from Wemos with USB-C - ideal for compact, low-power IoT projects with Wi-Fi and BLE 5.

📋 Technical Specifications

Complete technical specification details for LOLIN C3 Mini

🛰️ Connectivity

WiFi 802.11 b/g/n (2.4 GHz)
Bluetooth 5.0
BLE 5.0

🧠 Microcontroller

Model esp32c3
Clock Speed 160 MHz
Flash Size 4MB
Architecture riscv32

Features & Pins

Digital IO 22
Analog Input 6
Interrupts 22

LOLIN C3 Mini Pinout Diagram

Complete pin reference for LOLIN C3 Mini

LOLIN C3 Mini pinout

Pin Mappings

Complete pinout and GPIO mapping for LOLIN C3 Mini

22
Digital I/O Pins
22
Interrupt Pins
6
Analog Inputs
PinAnalogTouchPWMOther
0A0
1A1
2A2SCK
3A3MISO
4A4MOSI
5A5SS
7LED_BUILTIN
8SDA
10SCL
20RX
21TX
Legend
A0 Analog input
T0 Touch sensor
PWM PWM capable
RX/TX Serial pins
LED Built-in LED
# Pin number

Default Tools & Configuration

Build and upload settings for LOLIN C3 Mini

SettingValue
Bootloader toolesptool_py
Uploader toolesptool_py
Network uploader toolesp_ota
Bootloader address0x0
Flash modedio
Boot modeqio
Maximum upload size
1280 KB (1310720 bytes)
Maximum data size
320 KB (327680 bytes)
Configuration Summary

The LOLIN C3 Mini uses esptool_py for uploads , esp_ota for OTA updates, and esptool_py bootloader at 0x0.

Flash mode: dio | Boot mode: qio

Max sketch size: 1280 KB | Max data size: 320 KB